Effect of thermo-mechanical alloying and ageing in AA2014 aluminium alloys after synthesized using graphite

This study investigated the effects of aging and deep cryogenic treatment applied to Al7075 alloy on hardness and wear behavior. In this context, two different categories were created for the aging process. For the first group, after solutionizing the samples at 520 °C for 2 h, aging was applied at 120 °C for 12 h to reach 177 HV hardness. In the second group, after solutionizing at 520 °C for 2 h, the aging process was applied at 200 °C for 8 h to reach a hardness value of 164 HV. In addition, deep cryogenic treatment (12 h, 24 h, and 36 h at −140 °C) was applied to the samples after the solutionizing and aging processes. The pin-on-disc wear test was carried out according to the ASTM G99 standard in order to examine the effects of the aging and cryogenic processes on wear behavior. The highest wear resistance was obtained with the Al7075 sample aged at 120 °C for 12 h followed by the 12-h deep cryogenic treatment. Hardness values and wear test results showed that the applied cryogenic process had positively affected the wear behavior.

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Effects of Aging and Deep Cryogenic Treatment on Wear Behavior of Al7075 Alloy

Mavi

Kaplan

Aksöz

2021

Journal of Tribology

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Optimization of bonding parameters in diffusion bonding of Cu10Sn-B4C composites produced by P/M method

Ada,

Özsoy

2024

Sci Sintering

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In this study, bronze matrix and B4C reinforced composite materials were produced by the P/M method, and diffusion bonding processes were applied to these materials in the experimental setup created by the Taguchi method. In the bonding processes, it is assumed that the temperature required for diffusion will also be sufficient for the sintering of the samples, so an additional sintering process has not been performed on the specimens. Shear and microhardness tests and microstructural examinations were carried out to determine the material characterization. Microstructure examinations indicated that the powder metal specimens were properly sintered. In experimental studies, a decrease in microhardness and an increase in shear strength were observed as the temperature increased. With the increase in reinforcement rate, an increase in the shear strength of bonds and microhardness was observed. After the optimization process, the optimum result was detected in the bonding at 820?C temperature, 20 kg load, and 40 minutes 2 duration in unreinforced bonding. At the end of the verification experiments, it was observed that the resistance value obtained in the experimental studies and the estimated value were negligible at 3.71%, and there was a 21.92% progress in shear strength compared to the initial parameter value.

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Effect of thermo-mechanical alloying and ageing in AA2014 aluminium alloys after synthesized using graphite

Cited by 2 publications

References 27 publications

Effects of Aging and Deep Cryogenic Treatment on Wear Behavior of Al7075 Alloy

Effects of Aging and Deep Cryogenic Treatment on Wear Behavior of Al7075 Alloy

Optimization of bonding parameters in diffusion bonding of Cu10Sn-B4C composites produced by P/M method

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